Add table scaleway_billing_invoice (#122)

docs/tables/scaleway_billing_invoice.md

@@ -0,0 +1,229 @@
+---
+title: Steampipe Table: scaleway_billing_invoice - Query Scaleway Invoices using SQL  
+description: Enables users to query Scaleway invoices, offering comprehensive billing and usage details for Scaleway cloud services.
+---
+
+# Table: scaleway_billing_invoice - Query Scaleway invoices using SQL
+
+Scaleway invoices provide detailed records of charges for using Scaleway's cloud services. These invoices include a complete breakdown of costs for various resources and services within a Scaleway account.
+
+## Table Usage Guide
+
+The `scaleway_billing_invoice` table offers insights into billing information in Scaleway. It allows finance managers or cloud administrators to query invoice-specific details such as total amounts, billing periods, and associated organizations. Use this table to track expenses, verify charges, and manage cloud spending across different projects and timeframes.
+
+## Examples
+
+### Explore basic details of Scaleway invoices  
+Retrieve invoice identifiers, associated organizations, and billing periods to track cloud expenses effectively.
+
+```sql+postgres
+select
+  id,
+  organization_id,
+  billing_period,
+  total_taxed_amount,
+  state,
+  currency
+from
+  scaleway_billing_invoice;
+```
+
+```sql+sqlite
+select
+  id,
+  organization_id,
+  billing_period,
+  total_taxed_amount,
+  state,
+  currency
+from
+  scaleway_billing_invoice;
+```
+
+### Get total billed amount for each organization  
+Calculate the total amount billed for each organization to analyze spending across different entities.
+
+```sql+postgres
+select
+  organization_id,
+  sum(total_taxed_amount) as total_billed,
+  currency
+from
+  scaleway_billing_invoice
+group by
+  organization_id,
+  currency;
+```
+
+```sql+sqlite
+select
+  organization_id,
+  sum(total_taxed_amount) as total_billed,
+  currency
+from
+  scaleway_billing_invoice
+group by
+  organization_id,
+  currency;
+```
+
+### Find invoices with high discount amounts  
+Identify invoices with substantial discounts to understand cost-saving opportunities.
+
+```sql+postgres
+select
+  id,
+  billing_period,
+  total_discount_amount,
+  total_taxed_amount,
+  currency
+from
+  scaleway_billing_invoice
+where
+  total_discount_amount > 1000
+order by
+  total_discount_amount desc;
+```
+
+```sql+sqlite
+select
+  id,
+  billing_period,
+  total_discount_amount,
+  total_taxed_amount,
+  currency
+from
+  scaleway_billing_invoice
+where
+  total_discount_amount > 1000
+order by
+  total_discount_amount desc;
+```
+
+### List invoices within a specific date range  
+Retrieve invoices for a defined period to assist with financial reviews or audits.
+
+```sql+postgres
+select
+  id,
+  billing_period,
+  total_taxed_amount,
+  issued_date,
+  currency
+from
+  scaleway_billing_invoice
+where
+  issued_date between '2023-01-01' and '2023-12-31'
+order by
+  issued_date;
+```
+
+```sql+sqlite
+select
+  id,
+  billing_period,
+  total_taxed_amount,
+  issued_date,
+  currency
+from
+  scaleway_billing_invoice
+where
+  issued_date between '2023-01-01' and '2023-12-31'
+order by
+  issued_date;
+```
+
+### Get the average invoice amount by month  
+Analyze monthly spending patterns by calculating the average invoice amount.
+
+```sql+postgres
+select
+  date_trunc('month', issued_date) as month,
+  avg(total_taxed_amount) as average_invoice_amount,
+  currency
+from
+  scaleway_billing_invoice
+group by
+  date_trunc('month', issued_date),
+  currency
+order by
+  month;
+```
+
+```sql+sqlite
+select
+  strftime('%Y-%m', issued_date) as month,
+  avg(total_taxed_amount) as average_invoice_amount,
+  currency
+from
+  scaleway_billing_invoice
+group by
+  strftime('%Y-%m', issued_date),
+  currency
+order by
+  month;
+```
+
+### Compare total taxed and untaxed amounts  
+Analyze the tax impact by comparing taxed and untaxed amounts.
+
+```sql+postgres
+select
+  id,
+  total_untaxed_amount,
+  total_taxed_amount,
+  total_taxed_amount - total_untaxed_amount as tax_amount,
+  currency
+from
+  scaleway_billing_invoice
+order by
+  tax_amount desc;
+```
+
+```sql+sqlite
+select
+  id,
+  total_untaxed_amount,
+  total_taxed_amount,
+  total_taxed_amount - total_untaxed_amount as tax_amount,
+  currency
+from
+  scaleway_billing_invoice
+order by
+  tax_amount desc;
+```
+
+### Examine discounts and their impact  
+Evaluate the effect of discounts on invoices by comparing undiscounted and final taxed amounts.
+
+```sql+postgres
+select
+  id,
+  total_undiscount_amount,
+  total_discount_amount,
+  total_taxed_amount,
+  total_discount_amount / total_undiscount_amount * 100 as discount_percentage,
+  currency
+from
+  scaleway_billing_invoice
+where
+  total_discount_amount > 0
+order by
+  discount_percentage desc;
+```
+
+```sql+sqlite
+select
+  id,
+  total_undiscount_amount,
+  total_discount_amount,
+  total_taxed_amount,
+  total_discount_amount / total_undiscount_amount * 100 as discount_percentage,
+  currency
+from
+  scaleway_billing_invoice
+where
+  total_discount_amount > 0
+order by
+  discount_percentage desc;
+```

scaleway/plugin.go

@@ -23,6 +23,7 @@ func Plugin(ctx context.Context) *plugin.Plugin {
 			"scaleway_account_ssh_key":         tableScalewayAccountSSHKey(ctx),
 			"scaleway_baremetal_server":        tableScalewayBaremetalServer(ctx),
 			"scaleway_billing_consumption":     tableScalewayBillingConsumption(ctx),
+			"scaleway_billing_invoice":         tableScalewayBillingInvoice(ctx),
 			"scaleway_iam_api_key":             tableScalewayIamAPIKey(ctx),
 			"scaleway_iam_user":                tableScalewayIamUser(ctx),
 			"scaleway_instance_image":          tableScalewayInstanceImage(ctx),